We keep talking about politicians investing heavily on hackers, do you know how much is the budget of INEC? Don’t you think that INEC can hire the best cybersecurity experts in the world? this talk of hackers is one thing that the politicians are using to talk done on the issue of electronic voting in Nigeria.
So who appoints the INEC chairman? Of course its the incumbent president. That means the presidency (corrupt Tinibu as we all know) can appoint someone who aligns with their negative political interest and motives as the INEC chairman. This already neutralises your point, because such an INEC chairman will be the one to help rig the election electronically with part of their so called budget.
Assuming INEC in Nigeria is fully independent such that they organise and elect their leaders among themselves, then the president will have little to no control, meaning that we can be sure that if we organise an electronic voting election, we are sure the incumbent president will not influence the chairman to interfer with the result in any way. But it is unfortunate that's not the case.